Virus Profile: W32/Pykse.worm!4BA24C4FBBBF

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 11/23/2012
Date Added: 11/23/2012
Origin: Unknown
Length: 327680
Type: Virus
Subtype: Win32
DAT Required: 6904
Removal Instructions
   
 
 
   

Description

Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.

Indication of Infection

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Methods of Infection

Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.

   

Virus Characteristics

This is a Virus

File PropertiesProperty Values
McAfee DetectionW32/Pykse.worm
Length327680 bytes
MD54ba24c4fbbbf62434b5e1fd1b915a8d7
SHA1b73b09c34722da6baf23d5bd9eecf765860d1be0


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin-Trojan/Zepfod.327680.GN
avastWin32:Renos-KY
AVG (GriSoft)Generic_r.LA
aviraTR/Agent.327680.A
KasperskyTrojan.Win32.AntiAV.pin
BitDefenderWin32.Worm.Agent.QDK
clamavWorm.Autorun-2920
Dr.WebTrojan.Kypes.2
F-ProtW32/Trojan2.LOCO
FortiNetW32/Vilsel.PIV!tr
MicrosoftWorm:Win32/Pykspa.C
SymantecW32.Pykspa.D
EsetWin32/AutoRun.Agent.TG worm (variant)
normanW32/Pykse.A
pandaW32/SpySkype.E
risingWorm.Pykspa!27FE
SophosW32/Pykse-F
Trend MicroTROJ_VILSEL.SMO
vba32Trojan.Vilsel.pvp
V-BusterTrojan.Vilsel!O6vpeyLj3Lc (trojan)
Vet (Computer Associates)Win32/Pykspa.E

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Prevents the use of the default Windows Registry Editor.High
Adds or modifies system policies. Could be used to prevent the or detour the use of common system tools.High
Modifies Windows explorer file browser's Advanced settings. Sometimes used by malware to make executable files look like documents.Medium
Modifies Windows folder view settings. Could be used to make executable files look like documents.Medium
Modifies winlogon configuration settings in registryMedium
Adds or modifies winlogon shell registry value. Could be used to launch a program on startup.Medium
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaW32/Pykse.worm
McAfee SupportedW32/Pykse.worm



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

b73b09c34722da6baf23d5bd9eecf765860d1be0

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\phqfsisjbhemrjafxlfcjbkzmcmdvbyglduz.fzw
  • %TEMP%\lvwdiq.exe
  • %WINDIR%\SYSTEM32\krptvazfmhtqkrxrybkwszxbd.hnu
  • %TEMP%\phqfsisjbhemrjafxlfcjbkzmcmdvbyglduz.fzw
  • %WINDIR%\phqfsisjbhemrjafxlfcjbkzmcmdvbyglduz.fzw
  • %PROGRAMFILES%\krptvazfmhtqkrxrybkwszxbd.hnu
  • %PROGRAMFILES%\phqfsisjbhemrjafxlfcjbkzmcmdvbyglduz.fzw
  • %USERPROFILE%\Local Settings\Application Data\krptvazfmhtqkrxrybkwszxbd.hnu
  • %USERPROFILE%\Local Settings\Application Data\phqfsisjbhemrjafxlfcjbkzmcmdvbyglduz.fzw
  • %WINDIR%\krptvazfmhtqkrxrybkwszxbd.hnu
  • %TEMP%\krptvazfmhtqkrxrybkwszxbd.hnu

The following files were temporarily written to disk then later removed:

  • %TEMP%\lvwdiq\yjltzil\Users text file.txt
  • %TEMP%\lvwdiq\yjltzil\Users Word Document.doc
  • %TEMP%\lvwdiq\yjltzil\Users Excel Document.xls

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NODRIVETYPEAUTORUN = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\PFMZKYGVLPKQ = %TEMP%\ljytmiyvtfiwhfcnlffi.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\SLVLZQBTMTRAGZR = yvjdvqfbyjlyifbliba.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\OFNBNCLBSXTAE = %TEMP%\njwpgaojfpqclhclhz.exe .
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\XRCTIAMFZHGQXRKR = njwpgaojfpqclhclhz.exe .
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\SHELL = Explorer.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\FOLDER\HIDDEN\SHOWALL\CHECKEDVALUE = 145
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\NODRIVETYPEAUTORUN = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\PHQFSISJBHEMRJ = azplfctrqdhwihfrqlmqe.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\SHNZJWDRGJD = %TEMP%\ezldtmztoxxiqlfni.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\CONSENTPROMPTBEHAVIORADMIN = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\CONSENTPROMPTBEHAVIORUSER = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\ENABLEINSTALLERDETECTION = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\ENABLELUA = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\ENABLESECUREUIAPATHS = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\ENABLEVIRTUALIZATION = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\FILTERADMINISTRATORTOKEN = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\PROMPTONSECUREDESKTOP = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\VALIDATEADMINCODESIGNATURES = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\NJWPGAOJFPQCLHCLHZ = %TEMP%\ezldtmztoxxiqlfni.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\PFMZKYGVLPKQ = xrctiamfzhgqxrkr.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\EZLDTMZTOXXIQLFNI = %TEMP%\ezldtmztoxxiqlfni.exe .
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\OFNBNCLBSXTAE = azplfctrqdhwihfrqlmqe.exe .
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\ANTIVIRUSDISABLENOTIFY = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\ANTIVIRUSOVERRIDE = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\FIREWALLDISABLENOTIFY = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\FIREWALLOVERRIDE = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\UACDISABLENOTIFY = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\SECURITY CENTER\UPDATESDISABLENOTIFY = 1

The applications attempted the following network connection(s):

  • 174.122.0.**:80
  • 108.162.206.***:80
  • 208.48.81.***:80
  • 67.203.139.***:80
  • 173.194.79.***:80
  • hxxp://www.whatismyip.ca/
  • 194.19.16.**:80

   

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.


On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

   

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